5

Is the car on the floor? Many vehicles, I'm not sure if yours does for certain, feature a brake bias apportioning valve which is essentially a "tap" which opens or closes depending on the position of the rear beam axle. If the car is heavily loaded (i.e. has people in the rear seats and a boot / trunk full of cargo), more braking force is sent to the rear ...


4

Mitchell shows original equipment plugs are ACDelco 41-962 for the 5.3, which are double platinum plugs. Plug gap is 0.040". I've never used nor sold Bosch plugs before. From talking to people, I've never heard anything good. Make sure the plug gap is correct and that the wires are fully seated. If you still feel that the car is not performing as well as ...


4

The alignment is the lion's share of the expense here, so why wait til the outer side goes up to redo the alignment? Ideally, he should also replace on both driver and passenger sides while he's there for better/even wear. With a decent ball joint remover (harbor freight, $10. Get the screw type, not the fork) it's a quick job. A pair of tie rods and ...


3

I may be missing something here but this sounds very much like the normal process of an automatic gearbox shifting up through the gears while you accelerate. For engine revs to drop while roadspeed continues to increase shifting to a higher gear is pretty much the only explanation (although I suppose shifting to neutral while going down a steep hill might ...


3

tl dr: Move along; nothing to see here. 396,000km (246k miles) is a lot of use even for LSx engines. Unless you are getting this for free, I'd pass. There are several reasons for this. Even though this is a 5.3L engine, it isn't the same as what comes out of the trucks. It's nomenclatured as an LS4 engine. According to this Wikipedia Article, the ...


3

It sounds like you may have a coil pack which has gone bad on the #6 cylinder. The easy way to check this is to exchange the coil pack with one of the other two. If the problem follows the coil, then the coil is bad. If the problem stays at the same cylinder, consider your spark plug wire may be at fault. If the coil is what's bad, you'll need a replacement.


3

Has anyone messed with your A/C or Freon recently? If the compressor turns on then instantly stops it could be either you are lacking freon or there is too much in the line. If you over charge most compressors will turn off if it notices the pressure is above a certain limit. When it gets hot outside it also causes the pressure to rise which can cause this ...


3

From what I can gather the 2005 and 2008 wiring are the same, you may want to validate further. Here is the pinout for the radio connector.


2

Make sure that there is not any Trash between your condenser and radiator. Leaves and grass will prevent it from cooling properly and thus making the pressure rise to a point where it will cut off automatically.


2

Because of the antifreeze smell, I suspect a leak in your cooling system. Get yourself a radiator pressure tester. ($70 from Amazon or $80 from Harbor Freight or even make your own). Pressurize your radiator and see a) if you are losing pressure, and b) where the coolant/air is escaping when you pressurize the system. Another possibility is that your ...


2

A simple cause of boiling coolant is a radiator cap that doesn't hold pressure anymore. The cooling system is designed to be under a small amount of pressure, and that pressure increases the boiling temperature of water to the 250 degree neighborhood. A working cap will hold 12-15psi, and without it holding pressure, boiling happens much sooner, depending ...


1

It sounds to me like the fob contacts are giving up the ghost. If a battery replacement doesn't fix it, get a new clam shell for it. Just change out the guts (small electronic board) into the new clam shell. New clam shells usually come with the rubber insert which makes up the buttons. On the back of the rubber buttons is a contact point which wears out ...


1

Bleeding the brakes is a 2 person job. One to open and close the valve at the caliper and another stepping on the brake pedal to force the fluid out.


1

After diagnosis it looks like the ignition switch, when it does the no crank I can hold the key in the start position and wobble the key-lock cylinder around and it will crank, its like it does not quite engage the switch when the interior temps get to a certain point, strange issue I have never run into before but think I found the problem or least narrowed ...


1

Coolant boiling over usually indicates poor coolant circulation. Either your water pump is starting to fail (they usually leak a little bit when they start to fail) or your cooling system is partially obstructed. Here's things to check: look at the area near your water pump for small leaks (indicates worn out water pump) check your coolant level in the ...


1

There's a 10ga fusible link on the cable from the alternator to starter. This needs to be replaced with a new cable or you can generally buy a new fusible link and crimp or solder it in place. As to the why when a always hot cable shorts to ground it's basically a circuit with no load to limit the amount of amps. One of three things happen, a fuse blows if ...


1

sounds like something to do with the brake hydraulics. possibly brake booster? Need to state more information like HOW & WHEN things happen... What CAR? etc. ... The noise is very odd, but MIGHT be attributable to sticking brake components that suddenly come loose. Possible that some other kind of electronic control on your brakes is acting up as well, ...


1

I have the same problem with my 06 G6. The pins in your calipers are likely seized. Try cleaning or replacing the slide pins. If that doesn't help, it's probably time for calipers.


1

Over filling it by a little won't cause an issue. However you need to bleed the system if it was low. You could have a pocket of air stuck in the motor. You can youtube how to bleed your engine properly. If you bleed it out and it continues to overheat, have a shop do a block test. You will want that block test if you keep losing coolant and you don't have ...


1

When you accelerate a vehicle there is a weight transfer from the front to the rear. This means the front suspension will lose its loading and extend its springs. You need to have your front end inspected, paying particular attention to the drive shaft and hub bearings.


1

An ECU is an engine control unit. A PCM is a power train control module. They are the same thing. Automakers love alphabet soup. I would start my investigation at the coolant temperature sensor. A CTS normally reads -40 when it's unplugged or there is something wrong with the connector or wiring like an open or corroded/deformed pin. A simple way to check ...


1

Yes. Had a friend who changed motors. New motor had a slightly different cam otherwise exact same motor. He spent $4000.00 changing parts to get the car to run right. He finally gave up and sold it. He found out later that because of the cam change he needed a different model ECU. Good thing he works in a parts store. If you have a different engine that's a ...


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